240 MEMOIRS NATIONAL ACADEMY OF SCIENCES. voL.jm, 



Abdomen banded with white, with a median, lateral-dorsal, lateral and ventral row of 

 tufts of white hair-like scales. 



Wing markings: Extradiscal band broadly shaded with white, the white shade very broad 

 in the African vacuna and albida; not scalloped, nearly straight and only -curved outward 

 opposite the end of the discal spot. Edge of both pairs of wings two fine lines, four lines in 

 all; three marginal lines in the hind wings. Fore wings without the very sinuous submarginal 

 line of Callosamia. 



PHILOSAMIA CYNTHIA (Drury). 



Plates I; II; III; XLVIII, figs. 1-4; LVII, figs. 3, 4; LXXVI, figs. 2, 3; LXXXVIII, fig. 6 (canningi); XCII; 



XCIII, 'figs, a, b, c, d. 



[Attacus cynthia Drury, 111. Ex. Ent., II (1773), PI. 6, fig. 2.] 



[Samia cynthia Jordan, Seitz, Macrolep., Div. 1, p. 212, 1911. Two subspecies recognized — pryeri and walked.] 



[The account here given refers principally to P. waTkeri (F elder), but includes (Javan 

 race) the typical cynthia. The American insect belongs to P. walkeri.] 



Moth. — One <? . Fore wings slightly more falcate than usual, more so than in P. lunula 

 (ricini), and a little longer in proportion than in that species. Hind wings with the outer 

 edge straight, less convex or rounded than in P. lunula, and the hind angle more pointed, less 

 rounded than in P. lunula; the end of the abdomen only reaches to the end of the basal white 

 band of the hind wings, whereas in P. lunula it extends considerably beyond it. 



Body and wings ochreous, with no olive tints. Patagia edged with white. Fore wings; 

 the space enclosed by the basal white line regularly oblong, nearly as wide at the base of the 

 wings as at the distal end, otherwise the same; the extradiscal line more deeply bent out (as 

 if pushed out by the discal spot) than in P. lunula,; the white line is edged on the inside with 

 black, on the outside by dull pink, succeeded by a white band. The ring beyond this line is 

 dark ochreous. Margin of the wing ochreous Vandyke brown. Subapical white line scalloped 

 with four rather coarse, more obtuse points than in P. lunula. The narrow submarginal line 

 is alike in both species, with a deep regular sinus in cell. 



Ocellus flattened oval, distinct, the whitish blue line distinct, and forming a slightly less 

 open semicircle than in P. lunula. Hind wings with the extradiscal line, as on the fore wings, 

 deeply bent outwards opposite the distal end of the discal spot; the line otherwise is much 

 the same in both species. 



Discal spot of both wings decidedly longer and narrower than in P. lunula, and less curved. 

 The clear nearly diaphanous middle portion is more distinct than in P. lunula and the yellow 

 ocher hue is more decided. The submarginal spots on the hind wings are dusky, contrasting 

 with the ocher of the wing. Beneath the hues are a little faded. Abdomen yellowish, not 

 whitish as in P. lunula. 



Expanse of fore wings, 140 mm. 



Length of fore wing, 70 mm. ; of outer edge, 46 ; inner edge, 39 mm. 



Length of hind wing, 56 mm. ; greatest breadth, 35 mm. (of P. lunula, length of hind 



wing, 45; greatest breadth, 30 mm.). 

 Discal spot of fore wings, 19 by 4; of hind wings, 18 by 3i mm. 



This species (my single <? from Canton, China) is pale ochreous; the discal spots are longer, 

 the extradiscal line more bent outward, and the hind wings nearly straight on the outer edge, 

 not convex and rounded as in P. lunula, and the European and American adventive races of 

 P. cynthia. It occurs in China, north to near Pekin, lat. 35°-40°. 



The Java race. — A pair from Malang, east Java, are quite different from the Assam form, 

 as would seem natural when we consider the geographical difference between the two rather 

 distant regions. 



One cf , one 9 . Both individuals present the characteristic diagnostic mark by which, 

 in all the examples I have seen, the species differs from cynthia. This is the little angle or 

 forward projection at the end of the discal spot of the fore wing facing the costa, and situated 

 next to the extradiscal line. It also differs decidedly in the greenish ochreous hue, being light 



